238090 has 16 divisors (see below), whose sum is σ = 443880. Its totient is φ = 91840.

The previous prime is 238081. The next prime is 238093. The reversal of 238090 is 90832.

It can be written as a sum of positive squares in 4 ways, for example, as 168921 + 69169 = 411^2 + 263^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (238093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121 + ... + 700.

2²³⁸⁰⁹⁰ is an apocalyptic number.

238090 is a deficient number, since it is larger than the sum of its proper divisors (205790).

238090 is a wasteful number, since it uses less digits than its factorization.

238090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 238090 is about 487.9446689943. The cubic root of 238090 is about 61.9793549022.

The spelling of 238090 in words is "two hundred thirty-eight thousand, ninety".